category fixes : ordering fixed and auto slug generate updated

apps/course/models/course.py

@@ -156,13 +156,10 @@ class CourseCategory(models.Model):
 
     def save(self, *args, **kwargs):
         self.name = format_multilingual_field(self.name)
-        if not self.slug or self.slug == []:
         try:
             self.slug = generate_language_slugs(self.name)
         except Exception:
             self.slug = []
-        else:
-            self.slug = format_multilingual_field(self.slug)
 
         if not self.icon or str(self.icon).strip() == "":
             self.icon = "/media/Frame.svg"
@@ -173,6 +170,9 @@ class CourseCategory(models.Model):
     def course_count(self):
         return self.courses.exclude(status="inactive").count()
 
+    class Meta:
+        ordering = ('-id',)
+
 LEVEL_TRANSLATIONS = {
     'beginner': {
         'en': 'Beginner',

apps/course/views/course.py

@@ -76,7 +76,7 @@ def get_online_class_frontend_base() -> str:
 
 
 class CourseCategoryAPIView(ListAPIView):
-    queryset = CourseCategory.objects.all()
+    queryset = CourseCategory.objects.all().order_by('-id')
     serializer_class = CourseCategorySerializer
     pagination_class = StandardResultsSetPagination
     permission_classes = [AllowAny]